Re: glossary Data page

On Sunday, June 28, 2026, PG Doc comments form <noreply@postgresql.org>
wrote:

> The following documentation comment has been logged on the website:
>
> Page: https://www.postgresql.org/docs/18/glossary.html
> Description:
>
> > The basic structure used to store relation data. All pages are of the
> same
> size. Data pages are typically stored on disk, each in a specific file, and
> can be read to shared buffers where they can be modified, becoming dirty.
> They become clean when written to disk. New pages, which initially exist in
> memory only, are also dirty until written.
>
> Am I correct in understanding from this description that all files on the
> disk will be the same size?
> One page = one file?
>

No.  A page is an atomic unit subset of a file.  Files contain many pages.
It would be crazy to limit file sizes to 8kb when we have GB available.

David J.